Exerciser rocking device



April 12, 1949. I SEFTON HAL 2,467,236

EXERCISER ROCKING DEVICE Filed May 12, 1947 2 Sheets-Sheet l fig .1 (9aINVENTORS ROBERT C. SEFTON 8.

OLIVE R.SEFTON April 12, 194-9. R c, SEFTQN ETAL 2,467,236

EXERCISER ROCKING DEVICE Filed May 12, 1947 2 Sheets-Sheet 2 .qn' 11g 3.

minlllgl llll'llllnlll\- m .163 a, 7 lNVENTOR Jzx ROBERT C. SEFTON &

OLIVE R.$EFTON wand a Patented Apr. 12, 1949 UNITED STATES PATENT OFFICEExEacrsEa BOCKING- DEVICE Robert (J. Sefton an d Olive R. Sefton,Dormont, Pa., assigndrs 'to Sol Rudkin, Pittsburgh, Pa.

ApplicationMay '12, 1947, Serial-No. 747,480

4 claims. (01. 272 -52) This invention relates to an exerciser rockingdevice primarily intended for children but adapted for use by adults ifmade of sufficiently rugged construction and adequate size.

An object of the invention is to provide a rocking device which issimple in construction, inexpensive and in which the rider's weight'isalways so positioned that there is little likelihood of the devicetipping over backwards.

In the accompanying drawings which illustrate a preferred embodiment ofour invention,

Figures 1, 2 and 3 are side elevations of the device in differentpositions, Figure 1 representing the neutral position, Figure 2 thebackward position, and Figure 3 the forward position; and

Figure 4 is a front elevation of the rocking device in the neutralposition of Figure 1. e I

Referring more particularly to the accompanying drawings, the rockingdevice is preferably made of metal tubing such as steel or aluminumtubing. A seat 2 is supported on a tubular frame 3 and fastened to theframe by two screws 4. The frame is made by bending a metal tube so asto provide two rearwardly diverging legs 3a and 3b connected at theirfront ends. The frame 3 is supported on a front rocker 5 anda-reardouble rocker 6 having two rocker legs 5a and 6b. The entire doublerocker G is preferably made out of a single piece of tubing. 'The rearrocker is pivoted to the frame 3 as indicated by the reference numeral Iby bending the rear portions of the legs 3a and 3b into hooks 8 whichreceive the top portion of the rocker.

The front rocker 5 is preferably made of a single piece of tubingforming both the rocker portion proper and an arm 9 which extends abovethe frame and is provided with a handle 90. A T II] is integrallyconnected to the upper end of the portion 5a of the front rocker andthis T receives the front portion of the frame 3 and acts as a frontbearing or pivot for the frame and front rocker. The upper portion 5b ofthe front rocker is welded as indicated bythe reference numeral II or isotherwise connected to the T [0. A foot rest I2 is rigidly connected tothe front leg 5a of the front rocker. Two tie rods Na and l3b arepivotally connected adjacent their front ends to the front rocker asindicated by the reference numeral [4 and are pivotally connectedadjacent their rear ends to the rear rocker as indicated by thereference numeral IS.

The front portions of the two rear rocker legs Ba and 6b form a loop itwhich straddles the tie rods Ba and I31: and lies between the tie rodsand the frame 3. By reference to Figure 3, it will be seen'that when therocking device is in its most forward position, the loop [6 contactswith the tie rods and prevents further forward rocking movement of thedevice. When the rocking device is in its most backward position, asshown in Figure 2, the loop I6 contacts with the underside'of the frame3, thereby preventing further backward rocking movement of the device.

An important feature of the invention is the location of the rear rockerpivot 1 with respect to the center of the circle of which the rearlocker legs and 6b form an arc. The portion of each rear rocker legwhich contacts with the ground 'is the rocker portion between the linesl1 and "3. This bearing portion of the rocker is substantially arcuate,the center of its circle being indicated -by the reference numeral I9.The circle of which the rocker portion Il-l8 forms an arc is designatedby the reference numeral 20 and the radius of this circle by thereference numeral 2|. It will be seen that in the neutral position showninFigure l, the backward position shown in Figure 2 and the forwardposition shown in Figure 3; the pivot point I of the rear rocker 6 islocated forwardly of the center IQ of the circle 20 of which the rockerportion l'l-l 8 forms an. arc. 'Thus when the rocking device is in anyof its'positions and weight is applied to the seat, as by a ridersitting thereon, the applied weight tends to rock the device forwardly.The pivot III of the front rocker lies in a horizontal plane which-islower than the pivots 1, as can be seen by reference to the horizontalline 22. Thus when the seat 2 moves forwardly, it also moves downwardlyto a certain extent and when it moves rearwardly it moves upwardly.Accordingly, in rocking the device backwardly by pulling on the handle9a the rider has to lift a portion of his weight, thereby utilizing therocking device as an exerciser.

It will be noted by reference to Figure 2, which shows the device in itsmost rearward position, that due to the location of the pivot 1forwardly of the center point IS, the pivot I never reaches a pointrearward of the center l9 and accordingly any tendency of the rider tofall off backwardly is prevented.

.The invention is not limited to the preferred embodiment but may beotherwise embodied within the scope of the following claims.

We claim:

1. An exerciser rockin device comprising a frame, a seat supported onthe frame, a front rocker pivoted to the frame adjacent the forward endof the frame and having an arm integral with 3 the front rocker andextending above the frame, a foot rest on the front rocker, a reardouble rocker having two rocker legs spaced apart transversely of thedevice and pivoted to the frame adjacent the rear end of the frame, thepivots of the rear rocker legs bein in alinement transversely of thedevice, the bearing portion of each rear rocker leg being substantiallyarcuate, each pivot being located forwardly of the center of the circleof which the bearing portion of the rocker legs form an arc, and tierods pivoted adjacent their front ends to the lower part of the frontrocker and adjacent their rear ends to the lower part of,

the rear rockers.

2. An exerciser rocking device comprising a frame, a seat supported onthe frame, a front rocker pivoted to the frame adjacent the forward endof the frame and having an arm integral with the front rocker andextending above the frame, a foot rest on the front rocker, a reardouble rocker havin two rocker legs spaced apart transversely of thedevice and pivoted to the frame adjacent the rear end of the frame, thepivots of the rear rocker legs being in alinement transversely of thedevice, the bearing portion of each rear rocker leg bein substantiallyarcuate, each pivot being located forwardly of the center of the circleof which the bearing portions of the rocker legs form an arc, tie rodspivoted adjacent their front ends to the lower part of the front rockerand adjacent their rear ends to the lower part of the rear rockers, thefront portions of the two rocker legs of the rear double rocker forminga loop which straddles the tie rods, lies between the tie rods and theframe, and acts in conjunction with the tie rods and frame to limitrespectively the forward and rearward rocking movement of the device.

3. An exerciser rocking device comprisin a frame, a seat supported onthe frame, a front rocker pivoted to the frame adjacent the forward endof the frame and having an arm integral with the front rocker andextending above the frame, a foot rest on the front rocker, a reardouble rocker having two rocker legs spaced apart transversely of thedevice and pivoted to the frame adjacent the rear end of the frame, thepivots of the rear rocker legs being in alinement transversely of thedevice, each pivot being located forwardly of the center of the circleof which the bearing portions of the rocker legs form an arc, tie rodspivoted adjacent their front ends to the lower part of the front rockerand adjacent their rear ends to the lower part of the rear rockers, thefront portions of the two rocker legs of the rear double rocker formin aloop which straddles the tie rods, lies between the tie rods and theframe, and acts in conjunction with the tie rods and frame to limitrespectively the forward and rearward rocking movement of the device,the pivot of the front rocker being located, in all positions of thedevice, in a lower horizontal plane than the pivots of the rear rockerlegs. I

4. An exerciser rocking device comprising a frame made of tubular metaland having two legs connected at their forward ends anddivergingrearwardly, a seat supported on the frame, a front rocker, made oftubular metal, pivoted to the frame adjacent the forward end of theframe and having an arm integral with the front rocker and extendingabove the frame, a foot rest on the front rocker, a rear double rocker,made of tubular metal, having two rocker legs spaced apart transverselyof the device and pivoted to the frame adjacent the rear end of theframe, the pivots of the rear rocker legs being in alinementtransversely of the device, each pivot bein located forwardly of thecenter of the circle of which the bearing portions of the rocker legsform an arc, tie rods pivoted adjacent their front ends to the lowerpartof the front rocker and adjacent their rear ends to the lower part ofthe rear rockers, the front portions of the two rocker legs of thereardouble rocker forming a loop which straddles the tie rods, liesbetween the tie rods and the frame, and acts in conjunction with thetie. rods and frame to limit respectively the forward and rearwardrocking movement of the device, the pivot of the front rocker beinglocated, in all positions of the device, in a lower horizontal planethan the pivots of the rear rocker legs.

ROBERT C. SEFTON. OLIVE R. SEF'ION.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATIENTS Number Name Date 1,637,500 Sherrod Aug. 2, 19271,638,951 Nentwig Aug. 16, 1927 2,363,333 Johnson Nov. 21, 1 944

